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American Society for Testing and Materials (ASTM)
https://www.astm.org
Institute of Electrical and Electronics Engineers (IEEE)
https://www.ieee.org
ACI (American Concrete Institute)
https://www.concrete.org
NFPA (National Fire Protection Association)
https://www.nfpa.org
ASME (American Society of Mechanical Engineers)
https://www.asme.org
UL (Underwriters Laboratories)
https://www.ul.com
